City B is at a higher temperature because as you go higher in altitude the boiling point of water becomes lower.
Answer: The answer is A. - 4.88x10^20 H2O2 molecules
Explanation: I hope this helps!
The molar mass of the unknown compound is calculated as follows
let the unknown gas be represented by letter Y
Rate of C2F4/ rate of Y = sqrt of molar mass of gas Y/ molar mass of C2F4
= (4.6 x10^-6/ 5.8 x10^-6) = sqrt of Y/ 100
remove the square root sign by squaring in both side
(4.6 x 10^-6 / 5.8 x10^-6)^2 = Y/100
= 0.629 =Y/100
multiply both side by 100
Y= 62.9 is the molar mass of unknown gas
Answer:
C. Bones carry impulses to the nervous system.
Explanation:
hop this helps
